Improvement in couplings for gas and water mains



. KILBURN.

Couplings for Gas and Water-Mains.

$40,140,834 Patentedluly15,1873.

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WELLS KILBURN, OF NAPA, CALIFORNIA.

- IMPROVEMENT IN COUPLINGS FOR GAS AND WATER MAIN S.

Specification formn g part of Letters Patent No.

140,834, dated July 15, 1873; application filed March 10, 1873.

To all whom it may concern:

Be it known that I, WELLS KILBURN, of Napa, county of Napa, State ofCalifornia, have invented an Improved Coupling for Gas and Water Mains;and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings and to the letters marked thereon.

The object of my invention is to provide a novel device for couplingpipes in a speedy manner; and it consists in the employment of twoeccentrics operating upon opposite sides of one part of the coupling. Astrap passes around each of these eccentrics, and over a pin upon theother part of the coupling, so that when the eccentrics are turned so asto draw on the strap the parts will be strongly drawn together.

Referring to the accompanying drawings for a more complete explanationof my invention,

Figure 1 is a side elevation of my coupling. Fig. 2 is a top view.

A and B are two coupling pieces, into the ends of which the pipes O andD are screwed. Upon opposite sides of one of the couplings, A, are twoshort shafts, E, which serve as axes for the two eccentrics F. A squarepost, Gr, projecting from each eccentric, serves to turn them. Theperiphery of each eccentric is grooved, and a strap, H, encircles it,being brought nearly together at the front, as shown. The two parallelsides I I are then carried over a pin, J, which is secured to the sideof the other coupling, B.

Now, when it is necessary to unite two lengths of pipe the straps aresimply hooked over these pins, while the largest part of the eccentricis turned towards the part B. By means of a Wrench applied to the postsG the eccentrics are then turned so as to draw the two parts stronglytogether, and this makes a Very efficient coupling.

A short flange, entering a corresponding countersink, may be employed atthe point of junction of the pipes, and any suitable packing may beused.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

A pipe-coupling, consisting of the cams or eccentrics F, with theirstraps H, together with the pins J, upon the two parts of the coupling,respectively, when constructed to operate substantially as and for thepurpose herein described.

In witness whereof I have hereunto set my hand and seal.

WELLS KILBU RN. [L. s.]

Witnesses:

O. W. M. SMITH, PHILIP MAHLER.

